Enable modbus control on SMA STPS
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IMPORTANT! Make sure your inverter is set as slave and not as master device
Set the following parameters:
Parameter.Inverter.WModCfg.WCtlComCfg.Dyn.WGraEna: On
Parameter.Inverter.WModCfg.WCtlComCfg.Dyn.WGraPos: 1000%/s
Parameter.Inverter.WModCfg.WCtlComCfg.Dyn.WGraNeg: 1000%/s
Parameter.Inverter.WModCfg.WMod: 1079 External Active Power
Parameter.Operation.OpMod: 1467 Start